Conor McGregor In To Fight Floyd Mayweather

"The first, and most important part of this historic contract has now officially been signed off on," the Irish fighter said in a statement to Themaclife.com. "Congratulations to all parties involved. We now await [Mayweather's adviser] Al Haymon and his boxer's signature in the coming days."

On Thursday morning, Conor McGregor took to Twitter to speak out about the deal. He shared a photo with his newborn son lying in between his UFC championship belts and wrote in the caption: "Let's go get some boxing ones now son."

UFC president Dana White spoke out on TNT to confirm that McGregor signed his end of the bargain.

"The McGregor side is done," White said. "I'm starting to work on the Mayweather side now.